We get energy from the foods we eat. Our food supplies energy to keep our organs working. Our food also supplies heat to warm our bodies.The main energy foods are the carbohydrates (碳水化合物). These are sugars and starch (淀粉). Wheat and rice are rich in starch and many fruits and vegetables contain considerable amount of sugar. Sweets,honey and jam are also rich in sugar.Like carbohydrates,fats are food that provides us with energy. Butter,margarine,certain types of fish,eggs,cooking oils and most red meats are rich in fats. Fats can be stored in various parts of the body as reserves of energy. Because fats in general are slowly digested,they satisfy hunger for long periods.Proteins (蛋白质) are very complex substances. The body needs proteins for the growth of new cells and for the repair and replacement of old cells. Foods rich in proteins are essential to a balanced diet. Milk,some vegetables,meat,chicken,fish,cheese,grains and nuts are some foods rich in proteins.A good diet will contain a variety of foods so that the body contains all the minerals it needs for good health.Vitamins are necessary for the proper working of the body. If we eat a variety of foods,we can be sure of obtaining all the vitamins we need.Water makes up about 70 per cent of the weight of the human body. The average adult needs about two liters of water daily to replace the water the body loses.1.People can get all the minerals the body needs by（）.A、having a balanced dietB、drinking more milkC、eating fruits and vegetablesD、having more fish and eggs2.Of the following substances,which are not used as sources of energy by living things?（）A、StarchesB、VitaminsC、ProteinsD、Fats3.If equal weight of the following substances is “burned” in the body,the largest amount of energy is produced by（）.A、carbohydratesB、fatsC、vitaminsD、mineral salts4.Which of the following is not true?（）A、If a man weighs 150 pounds,105 pounds are water.B、Apple,butter and meat are rich in proteins.C、A well-balanced diet contains proteins,fats,minerals and vitamins.D、Biscuits,cakes and sweets may provide us with energy.5.A boy grows five centimeters a year. The new material in his body has been built mainly from food called（）.A、fatsB、vitaminsC、proteinsD、carbohydrates

____________________ for me to understand. 3. We can learn a lot ____________________ these books. 4. What do you know about ________________________engineering 5. Electricity is a kind of energy that flows like water through an ______ wire. 6. Electricity is used to provide _____________________ for machines. 7. Electricity is also used for _______________________ and lighting. 8. We mustn’t touch electricity because we may get an __________________. 9. We get electricity from _____________________ through wires and cables. 10.Thin wires are _________________________ to thick wires called cables.

great 【71】 of energy we need from coal, gas, and oil. However, the 【72】 of energy which we use is 【73】 every year, and we only have enough coal, gas, and oil for the next twenty or thirty years. How will we live 【74】 the energy which these things give us？ Scientists are looking for 【75】 to this problem. They are looking for new 【76】 to produce energy. For example, they are working with new ways 【77】 energy from the light and heat of the sun. They are also working with plans which produce energy from 【78】 of the oceans. All of the new methods 【79】 scientists are finding are still very expensive, but perhaps they will help solve our energy problems 【80】 the future.

(71)

A．number

B．group

C．price

D．deal

twenty years now. Not only has demand been 36 , but the oil we have been finding is coming from places that are 37 to reach. At the same time, more of this newly 38 oil is of the type that requires a greater investment to 39 . And because demand for this precious resource will grow, according to some, by over 40 percent by 2025, fueling the world’s economic 40 will take a lot more energy from every possible source.

The energy industry needs to get more from existing fields while continuing to search for new 41 . Automakers must continue to improve fuel efficiency and perfect hybrid (混合动力的) vehicles. Technological improvements are needed so that wind, solar and hydrogen can be more 42 parts of the energy equation. Governments need to formulate energy policies that promote 43 and environmentally sound development. Consumers must be willing to pay for some of these solutions, while practicing conservation efforts of their own.

Inaction is not an 44 . So let’s work together to balance this equation. We are taking some of the 45 needed to get started, but we need your help to go the rest of the way.

A) consequently

B) cultivate

C) declining

D) derived

E) difficult

F) discovered

G) economically

H) exception

I) feasible

J) growth

K) Option

L) refine

M) reserves

N) soaring

O) steps

There are many problems in our modern world. One very()serious problem is energy. We get a great () of energy we need from coal, gas, and oil. However, the () of energy which we use is () every year, and we only have enough coal, gas, and oil for the next twenty or thirty years. How will we live () the energy which these things give us？ Scientists are looking for () to this problem. They are looking for new () to produce energy. For example, they are working with new ways to () energy from the light and heat of the sun. They are also working with plans which produce energy from () of the oceans. All of the new methods () scientists are finding are still very expensive, but perhaps they will help solve our energy problems () the future.

1.A.number

B.group

C.price

D.deal

2.A.effect

B.amount

C.course

D.program

3.A.increase

B.increasing

C.had increased

D.is increasing

4.A.without

B.improve

C.producing

D.strength

5.A.key

B.a direction

C.a solution

D.service

6.A.cost

B.method

C.branch

D.pound

7.A.Show

B.pay

C.save

D.produce

8.A.property

B.remedy

C.welfare

D.movements

9.A.So that

B.which

C.whose

D.Of which

10.A.at

B.for

C.In

D.from

The project won’t carry on()we can get financial aid from the government

A.unless

B.though

C.whether

D.until

t through a working day．But here’s what I did know：something huge was happenin9．It was stirring economies and imaginations and possibilities like nothing I had ever known．I knew the world was changing in ways that meant I shouldn’t count on old assumptions．And I knew I had dreams I still hadn’t fulfilled.But I didn’t know how to realize them until I met with my old friend，Rollys Rouse，when we happened to move into the same neighborhood．

Rolly often called me with a stream of ideas．His rate of idea production per second seemed al- most incredible．Soon we were on the phone with each other every day．Talking about the Internet． TalMng about starting a new online company-maybe together． He was then developing a plan and he wanted me to be a part of it：we would give people wonderful，whole electronic houses on a CD-ROM and let them modify those homes to their own needs．Try out different windows and doors，different paint colors and furnishings．When they were satisfied，we would enable them to go online to make the project happen，to get the products and the financing and the。professional design and construction to help to do it outright． BuildingBlocks was the name Rolly came up with for his new enterprise．Rolly took the plunge first．He simply dropped his profitable energy—consulting business to commit himself full time to BuildingBlocks．I soon joined him after I quit my well—paid job at a newspaper． Together we developed a demo to show the features of our CD—ROM，“The New American Dream Home”．Then we took it to the annual convention of the National Association of Home Builders in Boston．All the big companies were there showing off their。latest products． To our delight，nearly everyone was eager to see what we were showin9，．including the top executives of some enormous companies．When we left，we had invitations from them to come to their offices to tell them more about BuildingBlocks. That was the start of my real lifetime dream and BuildBlocks，our company，has been prospering ever since． 回答下列各题： By“something huge was happenin9”，the writer refers to_________．

A.house designing

B.home decoration

C.furniture production

D.high-tech development

Energy independence. It has a nice ring to it. Doesn't it？ If you think so, you're not alone, because energy independence has been the dream of American president for decades, and never more so than in the past few years, when the most recent oil price shock has been partly responsible for kicking off the great recession.

“Energy independence” and its rhetorical (修辞的) companion “energy security” are, however, slippery concepts that are rarely though through. What is it we want independence from, exactly？

Most people would probably say that they want to be independent from imported oil. But there are reasons that we buy all that old from elsewhere.

The first reason is that we need it to keep our economy running. Yes, there is a trickle(涓涓细流)of biofuel(生物燃料)available, and more may become available, but most biofuels cause economic waste and environmental destruction.

Second, Americans have basically decided that they don't really want to produce all their own oil. They value the environmental quality they preserve over their oil imports from abroad. Vast areas of the United States are off-limits to oil exploration and production in the name of environmental protection. To what extent are Americans really willing to endure the environmental impacts of domestic energy production in order to cut back imports？

Third, there are benefits to trade. It allows for economic efficiency, and when we buy things from places that have lower production costs than we do, we benefit. And although you don't read about this much, the United States is also a large exporter of oil products, selling about 2 million barrels of petroleum products per day to about 90 countries.

There is no question that the United States imports a great deal of energy and, in fact, relies on that steady flow to maintain its economy. When that flow is interrupted, we feel the pain in short supplies and higher prices, At the same time, we derive massive economic benefits when we buy the most affordable energy on the world market and when we engage in energy trade around the world.

61. What does the author say about energy independence for America？()

A.It sounds very attractive.

B.It ensures national security.

C.It will bring oil prices down.

D.t has long been everyone's dream.

62. What does the author think of biofuels？()

A.They keep America's economy running healthily.

B.They prove to be a good alternative to petroleum.

C.They do not provide a sustainable energy supply.

D.They cause serious damage to the environment.

63. Why does America rely heavily on oil imports？()

A.It wants to expand its storage of crude oil.

B.Its own oil reserves are quickly running out.

C.It wants to keep its own environment intact.

D.Its own oil production falls short of demand.

64. What does the author say about oil trade？()

A.It proves profitable to both sides.

B.It improves economic efficiency.

C.It makes for economic prosperity.

D.It saves the cost of oil exploration.

65. What is the author's purpose in writing the passage？()

A.To justify America's dependence on oil imports.

B.To arouse Americans' awareness of the energy crisis.

C.To stress the importance of energy conservation.

D.To explain the increase of international oil trade.

A.on, on

B.till, on

C.to, from

D.on, until

The story does not say this, but from what we have read, we can tell that ______.

A．you get much hungrier in space than you do

B．you can't have water to drink in a spaceship

C．astronauts must learn many new and different things

D．you can't eat anything in a spaceship

tied up all next week. How about we plan on two weeks from today？ ______. Joe: OK. Wednesday in two weeks.

A．I can reach it on that Wednesday

B．I can make it on that Wednesday

C．I can get it on that Wednesday

D．I can assure it on that Wednesday